Rear shell for a brake booster



FIG. 1 is a rear perspective view of a rear shell for a brake boostershowing my new design;

FIG. 2 is a front elevation view of FIG. 1;

FIG. 3 is a rear elevation view of FIG. 1;

FIG. 4 is a side elevation view of FIG. 1;

FIG. 5 is a top view of FIG. 1; and,

FIG. 6 is a bottom view of FIG. 1.

The ornamental design of a rear shell for a brake booster, as shown anddescribed.